DVH

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Produces the dose volume histogram for the supplied dose matrix and structure(s). The structures can be supplied as Images (i.e. Fuzzy Masks) to ensure that the output values are accurate, or as Masks if accuracy is less important or the structures are larger. Statistics are weighted by the intensity of the Fuzzy Mask. See the Fuzzy Mask section in To Mask for a more detailed description of the concept.

Any image can be supplied to the Dose input – it is very important that the user ensures quality of the input data, i.e. that it is in fact a dose image.

Inputs

Dose

Image(s) containing the dose to be evaluated. Dose images are normally produced by importing DICOM RT DOSE, or RD files.

Type: Image, List, Required, Single

Volume(s)

Input volumes, provided as Masks or Images (Fuzzy Masks).

Type: Mask, Image, List, Required, Multiple

Outputs

DVH

A table with the DVH plot data. The first column lists the dose levels (x-axis) and each of the following columns contain the volume levels (y-axis) for a specific structure.

Type: Table

Stats

A table containing the DVH parameters. Basic parameters include image and structure information, such as names and volume. It also includes Dmin, Dmax and Dmean by defeault. It also includes other parameters that are specified in the Node Settings panel, for example D95.

Type: Table

Settings

Histogram

Prescribed Dose [Gy] Float

Set the prescribed dose (i.e. which level should represent 100% dose).

Title Text

Title of the plot.

Minimum Dose [Gy] Float

Minimum dose of the histogram.

Maximum Dose [Gy] Float

Maximum dose of the histogram.

Bins Integer

Set the number of histogram bins.

Dose DVH Statistics

D(%) [%] Numbers

Set the dose levels of interest to be explicitly displayed in the DVH Data output, specified in % of volume and output as % of prescribed dose.

D(%) [Gy] Numbers

Set the dose levels of interest to be explicitly displayed in the DVH Data output, specified in % of volume and output as absolute dose.

D(cc) [%] Numbers

Set the dose levels of interest to be explicitly displayed in the DVH Data output, specified in absolute volume and output as % of prescribed dose.

D(cc) [Gy] Numbers

Set the dose levels of interest to be explicitly displayed in the DVH Data output, specified in absolute volume and output as absolute dose.

Volume DVH Statistics

V(%) [%] Numbers

Set the volume levels of interest to be explicitly displayed in the DVH Data output, specified in % of prescribed dose and output as % of volume.

V(%) [cc] Numbers

Set the volume levels of interest to be explicitly displayed in the DVH Data output, specified in % of prescribed dose and output as absolute volume.

V(Gy) [%] Numbers

Set the volume levels of interest to be explicitly displayed in the DVH Data output, specified in absolute dose and output as % of volume.

V(Gy) [cc] Numbers

Set the volume levels of interest to be explicitly displayed in the DVH Data output, specified in absolute dose and output as absolute volume.

DVH